package com.sky.service.impl;

import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;
import java.time.LocalDateTime;
import java.util.List;
import java.util.Objects;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;


    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (Objects.equals(employee.getStatus(), StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employee
     */
    @Override
    public void save(Employee employee) {
        Employee emp = new Employee();
        //对象属性拷贝
        BeanUtils.copyProperties(employee, emp);
        //设置账号状态  默认为1 启用
        emp.setStatus(StatusConstant.ENABLE);
        //设置默认密码
        emp.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //设置当前账号的创建时间和修改时间
        emp.setUpdateTime(LocalDateTime.now());
        emp.setCreateTime(LocalDateTime.now());
        //设置创建人的id
        Long currentId = BaseContext.getCurrentId();
        emp.setUpdateUser(currentId);
        emp.setCreateUser(currentId);
        //保存
        employeeMapper.save(emp);
    }


    /**
     * 员工分页查询
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        PageResult pageResult = new PageResult();//创建PageResult对象
        Integer count = employeeMapper.count();//获取总记录数
        pageResult.setTotal(count-1);//设置总记录数
        //获取当前页数据
        employeePageQueryDTO.setPage(employeePageQueryDTO.getPage()-1);
        employeePageQueryDTO.setPageSize(employeePageQueryDTO.getPageSize()-1);
        pageResult.setRecords(employeeMapper.page(employeePageQueryDTO));
        return pageResult;
    }

    @Override
    public void status(Integer status, Long id) {
        employeeMapper.status(status,id);
    }

    @Override
    public Employee getById(Long id) {
        return employeeMapper.getById(id);
    }

    @Override
    public void update(Employee employee) {
        //设置当前账号的创建时间和修改时间
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateTime(LocalDateTime.now());
        employeeMapper.update(employee);
    }

}
